EP1467841B1 - A process for treating a surface - Google Patents
A process for treating a surface Download PDFInfo
- Publication number
- EP1467841B1 EP1467841B1 EP02785131A EP02785131A EP1467841B1 EP 1467841 B1 EP1467841 B1 EP 1467841B1 EP 02785131 A EP02785131 A EP 02785131A EP 02785131 A EP02785131 A EP 02785131A EP 1467841 B1 EP1467841 B1 EP 1467841B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- particles
- agent
- treating
- particle
- coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Revoked
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
- A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
- A61C3/025—Instruments acting like a sandblast machine, e.g. for cleaning, polishing or cutting teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/0275—Containing agglomerated particulates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/10—Washing or bathing preparations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
- B24C1/086—Descaling; Removing coating films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C11/00—Selection of abrasive materials or additives for abrasive blasts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/28—Rubbing or scrubbing compositions; Peeling or abrasive compositions; Containing exfoliants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/60—Particulates further characterized by their structure or composition
- A61K2800/65—Characterized by the composition of the particulate/core
- A61K2800/651—The particulate/core comprising inorganic material
Definitions
- the invention relates to a process for treating a surface to remove a coating from the surface, the process being of the type which employs an erasing agent comprising a plurality of particles.
- Sand blasting and other abrasive techniques are quite applicable on hard substrates, but require special arrangements to meet the specification related to environment and working conditions.
- WO-A-94/07658 in the name of Norsk Hydro A.S discloses a wet blasting process which employs an aqueous slurry of precipitated, non-soluble, calcium carbonate.
- the use of such aqueous wet blasting agents has a number of disadvantages.
- the aqueous blasting slurries have a tendency to freeze when used in countries where severe winters are encountered. Further, the presence of water in blasting slurries can have the effect of contributing to erosion of the surface being cleaned. This problem is particularly acute when the surface being cleaned forms part of a structure or building.
- the use of aqueous blasting slurries to treat surfaces having electrical components can be particularly hazardous and can cause corrosion.
- US-A-3 767 791 discloses a dental cream containing abrasive agglomerates and, as a further component, calcium carbonate. According to the document, the cream is for use in the oral cavity and to remove deposits from the surface of the teeth.
- a process for treating a surface to remove a coating from the surface the process being of the type which employs an erasing agent comprising a plurality of particles, the particles comprising a precipitate or agglomerate of Calcium Carbonate, the process comprising the step of contacting the surface with the erasing agent such that at least some of the particles roll along at least a portion of the surface, wherein an angle of incidence of the particles and the surface is between 0° and 60°, wherein the particles are generally round and have an irregular surface configuration to effect a rolling movement along the surface such that the particles nib and absorb the coating from the surface, and wherein the treating agent is substantially non-aqueous and wherein the particles have an average maximum diameter of between 30 and 1000 microns.
- substantially non-aqueous as applied to treating agents should be understood as meaning treating agents having less than 5% water. A minimal amount of water is often included in the treating agent to minimise the production of dust.
- the treating agent comprises less than 5% water, suitably less than 4% water, typically less than 3% water, preferably less than 2% water, and ideally less than 1% water.
- the projected particle impacts the substrate at a low angle of incidence it rolls along the surface, rubbing and absorbing the coating from the surface.
- the treating agent includes an non-aqueous solvent such as, for example, an alcohol.
- the particles are non-crystalline.
- the particles are generally round.
- the term "generally round” as applied to particles should be understood to mean any shape which of particle which enables the particle to easily assume a rolling motion when moved along a surface.
- the term is primarily intended to refer to spherical particles, it is not intended to exclude other types of spheroids such as spheres having an oblong or elliptical shape.
- the particles will have an irregular surface configuration.
- the particles are relatively soft. Generally, the particles have an average hardness of less than 10 Mohs, typically less than 8 Mohs, and preferably less than 6 Mohs. Typically, the particles will have an average hardness of at least 1 Mohs, and preferably of at least 2 Mohs. In a preferred embodiment of the invention, the particles will have an average hardness of about 3 Mohs. The particles have an average maximum diameter of between 30 and 1000 microns.
- the process of the invention may be a blasting operation or a manual rubbing operation.
- blasting When the process of the invention is a blasting operation, various means of blasting are envisaged, such as for example, mechanical projection (i.e. centrifugal particle acceleration), pneumatic particle projection and electrostatic particle projection.
- a mechanical particle projecting device which is suitable for carrying out the process of the invention is described in published International Patent Application No PCT/EP00/09960.
- dry blasting is envisaged.
- wet blasting may be appropriate whereby a wet component of the treating agent is non-aqueous.
- a wet component may be a non-aqueous solvent such as, for example, an alcohol.
- the particles may be rubbed along the surface using a cloth, by hand, or by any other means such as, for example, a mechanical polishing, brushing or rubbing apparatus or the like.
- the invention also relates to the use of the process of the invention in dental applications such as teeth whitening, plaque removal and general cleaning or polishing of the teeth, buccal cavity, and prosthetic parts such as crowns, bridges and complete or partial dentures.
- the process may involve either blast application using some form of particle accelerator, or manual application, of the treating agent.
- Manual application includes conventional brushing, rubbing, polishing or the like.
- the invention also relates to the use of the process of the invention in treating bone.
- the invention also relates to the use of the process of the invention in cosmetic application.
- the process may be employed to remove skin in, for example, an exfoliating application.
- the invention also relates to the use of the process of the invention in treating automobiles, bikes, aeroplanes, boats, casting dies, machines and parts thereof.
- the process may be utilised in treating and/or maintaining equipment in petrochemical, chemical and food production facilities.
- substantially non-aqueous treating agents has a number of advantages.
- Aqueous treating agents such as blasting slurries have a tendency to freeze when used in countries where severe winters are encountered. Further, the presence of water in blasting slurries can have the effect of contributing to erosion of the surface being cleaned. This problem is particularly acute when the surface being cleaned forms part of a structure or building.
- the use of aqueous blasting slurries to treat surfaces having electrical components can be particularly hazardous due to corrosion. Use of the process of the invention obviates these problems.
- the treating agent After having cleaned or otherwise treated the substrate according to the process of the invention the treating agent is easily removed together with the removed coating.
- the cleaning agent itself is environmentally acceptable.
- the present invention has been found to be effective at removing various types of coatings from substrates having hardness from that of steel to wood (or even softer materials) without causing damage to the subtrates surface.
- the treating agent can easily be removed by flushing with water or compressed air. The person carrying out the cleaning process is not exposed to any harm and the agent is acceptable from an environmental point of view.
- the agent is also available in desired qualities, particle size, hardness etc.
- a particle indicated generally by the reference numeral 1, which is used in the process of the invention.
- the particle is a particle of precipitated calcium carbonate and has a generally round, and slightly irregular, shape and a rough, irregular, surface configuration.
- the process of the invention is illustrated in which the particle 1 is projected towards a surface 2 having a coating 3 to be removed. Due to the low angle of incidence of the particle 1 and the surface 2, and the generally round shape of the particle 1, upon impact the particle 1 rolls along the surface, rubbing the surface and absorbing the coating 3 onto a surface of the particle. This has the net effect of removing the coating from the surface without causing any damage to the surface.
- Production of insoluble particles CaCO3 is carried out by providing free Ca ++ in a liquid with a PH over 7 by dissolving calcium oxide in water.
- the most common method of agglomeration is where the constituents are physically mixed together with an organic binder. The solvent is then driven off and the resultant material sized. The binder should be burnt off during spraying. This process is used in the manufacture of NiAl, AlSi or polyester powders.
- the most common method of agglomeration is where the constituents are physically mixed together with an organic binder. The solvent is then driven off and the resultant material sized. The binder should be burnt off during spraying. This process is used in the manufacture of NiAl, AlSi-polyester powders.
- spray drying has become another common method for the agglomeration of powders. Here, a slurry is formed with the constituents and this is then fed into a rotary spray head.
- the slurry forms an atomised cloud which is solidified by an opposing warm air stream to produce a powder.
- This method is used for ceramics such as zirconia and cermets such as WC-cobalt.
- the powder is largely spherical but in the as spray dried state can be porous and friable.
- the material is often densified and stabilised by sintering and/or spray densification.
- Atomisation techniques There are a number of atomisation techniques which all rely on the production of a molten pool as the source. Atomisation methods include Rotating Electrode, Vibrating Electrode (arc), Centrifugal (from a melt) and Rapid Solidification (eg aluminium ribbon). However, by far the most commonly used methods are either water or gas atomisation.
- the process of the invention may be carried out using some form of particle accelerator, such as that described in International Patent Application No PCT/EP00/09960 and using the operational parameters described in this Application, or by means of manual treatment of a surface.
- particle accelerator such as that described in International Patent Application No PCT/EP00/09960 and using the operational parameters described in this Application, or by means of manual treatment of a surface.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Mechanical Engineering (AREA)
- Birds (AREA)
- Chemical & Material Sciences (AREA)
- Dermatology (AREA)
- Inorganic Chemistry (AREA)
- Dentistry (AREA)
- Cosmetics (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Chemical Treatment Of Metals (AREA)
- Detergent Compositions (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
- The invention relates to a process for treating a surface to remove a coating from the surface, the process being of the type which employs an erasing agent comprising a plurality of particles.
- Cleaning of the surfaces of various types of equipment and structures is often desirable. Numerous processes and cleaning agents are known in the art. The choice of process and agent depends to a great extent on the coating to be removed and on the substrate. In addition, the working conditions and the environmental effects of the process and agent used are becoming increasingly important factors when selecting an optimal cleaning technique.
- Sand blasting and other abrasive techniques are quite applicable on hard substrates, but require special arrangements to meet the specification related to environment and working conditions.
- Less hard and durable substrates like aluminium, wood and composite materials require processes and cleaning agents which do not cause mechanical or chemical damage to the surface of the substrate.
- WO-A-94/07658 in the name of Norsk Hydro A.S discloses a wet blasting process which employs an aqueous slurry of precipitated, non-soluble, calcium carbonate. The use of such aqueous wet blasting agents has a number of disadvantages. The aqueous blasting slurries have a tendency to freeze when used in countries where severe winters are encountered. Further, the presence of water in blasting slurries can have the effect of contributing to erosion of the surface being cleaned. This problem is particularly acute when the surface being cleaned forms part of a structure or building. Moreover, the use of aqueous blasting slurries to treat surfaces having electrical components can be particularly hazardous and can cause corrosion.
- US-A-3 767 791 discloses a dental cream containing abrasive agglomerates and, as a further component, calcium carbonate. According to the document, the cream is for use in the oral cavity and to remove deposits from the surface of the teeth.
- It is an object of the invention to overcome at least some of the above disadvantages.
- According to the invention, there is provided a process for treating a surface to remove a coating from the surface, the process being of the type which employs an erasing agent comprising a plurality of particles, the particles comprising a precipitate or agglomerate of Calcium Carbonate, the process comprising the step of contacting the surface with the erasing agent such that at least some of the particles roll along at least a portion of the surface, wherein an angle of incidence of the particles and the surface is between 0° and 60°, wherein the particles are generally round and have an irregular surface configuration to effect a rolling movement along the surface such that the particles nib and absorb the coating from the surface, and wherein the treating agent is substantially non-aqueous and wherein the particles have an average maximum diameter of between 30 and 1000 microns.
- In this specification, the term "substantially non-aqueous" as applied to treating agents should be understood as meaning treating agents having less than 5% water. A minimal amount of water is often included in the treating agent to minimise the production of dust.
- In one embodiment of the invention, the treating agent comprises less than 5% water, suitably less than 4% water, typically less than 3% water, preferably less than 2% water, and ideally less than 1% water.
- When the projected particle impacts the substrate at a low angle of incidence it rolls along the surface, rubbing and absorbing the coating from the surface.
- In one embodiment of the invention, the treating agent includes an non-aqueous solvent such as, for example, an alcohol.
- In a preferred embodiment of the invention, the particles are non-crystalline.
- The particles are generally round. In this specification the term "generally round" as applied to particles should be understood to mean any shape which of particle which enables the particle to easily assume a rolling motion when moved along a surface. As such, while the term is primarily intended to refer to spherical particles, it is not intended to exclude other types of spheroids such as spheres having an oblong or elliptical shape. Typically, the particles will have an irregular surface configuration.
- Ideally, the particles are relatively soft. Generally, the particles have an average hardness of less than 10 Mohs, typically less than 8 Mohs, and preferably less than 6 Mohs. Typically, the particles will have an average hardness of at least 1 Mohs, and preferably of at least 2 Mohs. In a preferred embodiment of the invention, the particles will have an average hardness of about 3 Mohs. The particles have an average maximum diameter of between 30 and 1000 microns.
- The process of the invention may be a blasting operation or a manual rubbing operation.
- When the process of the invention is a blasting operation, various means of blasting are envisaged, such as for example, mechanical projection (i.e. centrifugal particle acceleration), pneumatic particle projection and electrostatic particle projection. A mechanical particle projecting device which is suitable for carrying out the process of the invention is described in published International Patent Application No PCT/EP00/09960. Generally speaking, dry blasting is envisaged. However, in certain circumstances wet blasting may be appropriate whereby a wet component of the treating agent is non-aqueous. Such a wet component may be a non-aqueous solvent such as, for example, an alcohol.
- When the process of the invention involves manual projection of the particles along the surface, the particles may be rubbed along the surface using a cloth, by hand, or by any other means such as, for example, a mechanical polishing, brushing or rubbing apparatus or the like.
- The invention also relates to the use of the process of the invention in dental applications such as teeth whitening, plaque removal and general cleaning or polishing of the teeth, buccal cavity, and prosthetic parts such as crowns, bridges and complete or partial dentures. As such, the process may involve either blast application using some form of particle accelerator, or manual application, of the treating agent. Manual application includes conventional brushing, rubbing, polishing or the like.
- The invention also relates to the use of the process of the invention in treating bone.
- The invention also relates to the use of the process of the invention in cosmetic application. Thus, the process may be employed to remove skin in, for example, an exfoliating application.
- The invention also relates to the use of the process of the invention in treating automobiles, bikes, aeroplanes, boats, casting dies, machines and parts thereof. In addition, the process may be utilised in treating and/or maintaining equipment in petrochemical, chemical and food production facilities.
- The use of substantially non-aqueous treating agents has a number of advantages. Aqueous treating agents such as blasting slurries have a tendency to freeze when used in countries where severe winters are encountered. Further, the presence of water in blasting slurries can have the effect of contributing to erosion of the surface being cleaned. This problem is particularly acute when the surface being cleaned forms part of a structure or building. Moreover, the use of aqueous blasting slurries to treat surfaces having electrical components can be particularly hazardous due to corrosion. Use of the process of the invention obviates these problems.
- Use of the process of the invention has the effect of removing coatings without damaging the surface of the substrate. It should also be possible to clean complete structures and equipment having complex geometrical configurations such as valves, bridges, bearings, ballbearings etc having parts which are difficult to access with conventional cleaning equipment or conventional blasting jets.
- After having cleaned or otherwise treated the substrate according to the process of the invention the treating agent is easily removed together with the removed coating. The cleaning agent itself is environmentally acceptable.
- The invention will be more clearly understood from the following description of some embodiments thereof, given by way of example only, with reference to the following figures in which:
- Fig 1 is an illustration of a particle of a treating agent; and
- Fig 2 illustrates the process of the invention.
- The present invention has been found to be effective at removing various types of coatings from substrates having hardness from that of steel to wood (or even softer materials) without causing damage to the subtrates surface. The treating agent can easily be removed by flushing with water or compressed air. The person carrying out the cleaning process is not exposed to any harm and the agent is acceptable from an environmental point of view. The agent is also available in desired qualities, particle size, hardness etc.
- Referring to the drawings, and initially to Fig 1, there is illustrated a particle, indicated generally by the reference numeral 1, which is used in the process of the invention. The particle is a particle of precipitated calcium carbonate and has a generally round, and slightly irregular, shape and a rough, irregular, surface configuration.
- Referring to Fig 2, the process of the invention is illustrated in which the particle 1 is projected towards a surface 2 having a
coating 3 to be removed. Due to the low angle of incidence of the particle 1 and the surface 2, and the generally round shape of the particle 1, upon impact the particle 1 rolls along the surface, rubbing the surface and absorbing thecoating 3 onto a surface of the particle. This has the net effect of removing the coating from the surface without causing any damage to the surface. - Production of insoluble particles CaCO3 is carried out by providing free Ca++ in a liquid with a PH over 7 by dissolving calcium oxide in water.
- Addition of CO2 results in the precipitation CaCO3.
Ca++ + 2OH- + CO2 → CaCO3 + H2O
- Various other methods of production of particles forming part of treating agents according to the invention have been investigated using various types of substrates including plastic, metal and polymer. Examples of these methods include:
- There are numerous chemical methods for producing spherical powders. Generally, chemical methods result in very fine powder particle sizes. Such methods include Sol Gel, chemical precipitation, Reaction, reduction (hydrogen in an autoclave to reduce metal salts to the metal), decomposition (eg metal carbonyls) and Electrolysis.
- This is the most widely used industrial process involving particle formation and drying. It is highly suited for the continuous production of dry solids in either powder, granulate or agglomerate form from liquid feedstocks as solutions, emulsions and pumpable suspensions.
- The most common method of agglomeration is where the constituents are physically mixed together with an organic binder. The solvent is then driven off and the resultant material sized. The binder should be burnt off during spraying. This process is used in the manufacture of NiAl, AlSi or polyester powders. The most common method of agglomeration is where the constituents are physically mixed together with an organic binder. The solvent is then driven off and the resultant material sized. The binder should be burnt off during spraying. This process is used in the manufacture of NiAl, AlSi-polyester powders.
The use of spray drying has become another common method for the agglomeration of powders. Here, a slurry is formed with the constituents and this is then fed into a rotary spray head. Here, the slurry forms an atomised cloud which is solidified by an opposing warm air stream to produce a powder. This method is used for ceramics such as zirconia and cermets such as WC-cobalt. The powder is largely spherical but in the as spray dried state can be porous and friable. The material is often densified and stabilised by sintering and/or spray densification. - There are also methods of mechanical agglomeration (eg the Hosakawa method) where for example a hard constituent is mechanically driven into a softer matrix particle to form a composite powder. Indeed, simple ball grinding can be used to mechanically alloy two or more constituents together.
Although sintering can be used as part of the spray drying process it can also be used alone as a method to manufacture powders. The constituents are mixed together and heated to get some solid state diffusion going and then the resultant product is crushed. A number of repeated cycles can be used to promote further alloying in which case the powder is called a "reacted" powder. - There are a number of atomisation techniques which all rely on the production of a molten pool as the source. Atomisation methods include Rotating Electrode, Vibrating Electrode (arc), Centrifugal (from a melt) and Rapid Solidification (eg aluminium ribbon). However, by far the most commonly used methods are either water or gas atomisation.
-
- Solid State Reduction
- Electrolysis
- Electrodeposition
- Mechanical Comminution
- As described above, the process of the invention may be carried out using some form of particle accelerator, such as that described in International Patent Application No PCT/EP00/09960 and using the operational parameters described in this Application, or by means of manual treatment of a surface.
- The invention is not limited to the embodiments hereinbefore described which may be varied in process step without departing from the invention as it is defined in the appended claims.
Claims (6)
- A process for treating a surface to remove a coating from the surface, the process being of the type which employs an erasing agent comprising a plurality of particles, the particles comprising a precipitate or agglomerate of calcium carbonate, the process comprising the step of contacting the surface with the erasing agent such that at least some of the particles roll along at least a portion of the surface, wherein an angle of incidence of the particles and the surface is between 0° and 60°, wherein the particles are generally round and have an irregular surface configuration to effect a rolling movement along the surface such that the particles rub and absorb the coating from the surface, and wherein the erasing agent is substantially non-aqueous, and wherein the particles have an average maximum diameter of between 30 and 1000 microns.
- A process as claimed in any preceding Claim which is a blasting operation.
- A process as claimed in any of Claims 1 to 2 which employs manual application of the treating agent.
- The use of the process of any of Claims 1 to 3 in dental applications such as teeth whitening, plaque removal and general cleaning or polishing of the teeth, buccal cavity and prosthetic parts such as crowns, bridges and complete or partial dentures.
- The use of the process of any of Claims 1 to 3 in treating bone.
- The use of the process of any of Claims 1 to 3 to exfoliate skin.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06003360A EP1666203A1 (en) | 2002-01-24 | 2002-09-24 | A process for removing a coating from a surface |
EP06017130A EP1738872A1 (en) | 2002-01-24 | 2002-09-24 | Agent for exfoliating skin |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE20020038 | 2002-01-24 | ||
IE20020038 | 2002-01-24 | ||
PCT/EP2002/010692 WO2003061908A1 (en) | 2002-01-24 | 2002-09-24 | A process for treating a surface |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06003360A Division EP1666203A1 (en) | 2002-01-24 | 2002-09-24 | A process for removing a coating from a surface |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1467841A1 EP1467841A1 (en) | 2004-10-20 |
EP1467841B1 true EP1467841B1 (en) | 2006-04-12 |
Family
ID=27590136
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06017130A Withdrawn EP1738872A1 (en) | 2002-01-24 | 2002-09-24 | Agent for exfoliating skin |
EP02785131A Revoked EP1467841B1 (en) | 2002-01-24 | 2002-09-24 | A process for treating a surface |
EP06003360A Pending EP1666203A1 (en) | 2002-01-24 | 2002-09-24 | A process for removing a coating from a surface |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06017130A Withdrawn EP1738872A1 (en) | 2002-01-24 | 2002-09-24 | Agent for exfoliating skin |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06003360A Pending EP1666203A1 (en) | 2002-01-24 | 2002-09-24 | A process for removing a coating from a surface |
Country Status (8)
Country | Link |
---|---|
US (1) | US7351059B2 (en) |
EP (3) | EP1738872A1 (en) |
AT (1) | ATE322958T1 (en) |
CA (1) | CA2473732A1 (en) |
DE (1) | DE60210674T2 (en) |
ES (1) | ES2262869T3 (en) |
NO (1) | NO20043220L (en) |
WO (1) | WO2003061908A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2519030A1 (en) * | 2003-03-24 | 2004-10-07 | Exa Sa | A treatment composition |
EP2113339A1 (en) | 2008-04-30 | 2009-11-04 | Omya Development AG | Alkaline earth carbonate containing mineral for surface cleaning |
CA2757117C (en) | 2009-04-02 | 2015-06-23 | Colgate-Palmolive Company | Exfoliating dentifrice composition and method of use |
DE102013004088A1 (en) | 2013-03-11 | 2014-09-11 | Voco Gmbh | Particularly storage-stable and thixotropic stable prophylaxis paste for professional dental use |
EP3045503A1 (en) | 2015-01-15 | 2016-07-20 | Omya International AG | Surface-treated calcium carbonate with improved stability in environments with a pH of 4.5 to 7 |
US11534278B2 (en) * | 2017-10-02 | 2022-12-27 | Karen Ann Lindeman | Denture deburr tool |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2796338A (en) * | 1953-11-23 | 1957-06-18 | Bayrische Berg Hutten And Salz | Blasting material of metal for treating surfaces |
US3090166A (en) * | 1959-02-17 | 1963-05-21 | Bell Intercontinental Corp | Polishing method and device |
US3559344A (en) * | 1968-01-25 | 1971-02-02 | Ruth A Peterson | Air ptessure gun |
US3491563A (en) * | 1968-04-30 | 1970-01-27 | Jose Alonso | Centrifugal shot peening device |
US3864471A (en) * | 1968-12-20 | 1975-02-04 | Colgate Palmolive Co | Stable dentifrices containing a monofluorophosphate, an insoluble metaphosphate, and calcium carbonate |
US3767791A (en) * | 1971-06-03 | 1973-10-23 | Colgate Palmolive Co | Dental cream containing abrasive agglomerates |
US4369605A (en) * | 1980-07-11 | 1983-01-25 | Monsanto Company | Methods for preparing tube sheets for permeators having hollow fiber membranes |
US5066335A (en) * | 1989-05-02 | 1991-11-19 | Ogilvie Mills Ltd. | Glass-like polysaccharide abrasive grit |
US5356291A (en) * | 1989-07-03 | 1994-10-18 | Dunhall Pharmaceuticals, Inc. | Treatment of a tooth |
DE9002268U1 (en) * | 1990-02-26 | 1991-06-27 | THERA Patent GmbH & Co. KG Gesellschaft für industrielle Schutzrechte, 82229 Seefeld | Sandblaster |
US5203698A (en) * | 1991-04-25 | 1993-04-20 | Blake Thomas S | Wet foam sandblaster |
US5334019A (en) * | 1991-12-06 | 1994-08-02 | American Dental Technologies, Inc. | Dental air abrasive system |
NO175807C (en) * | 1992-09-25 | 1994-12-14 | Norsk Hydro As | Method of coating removal and blowing agent for coating removal |
DE69314046T2 (en) * | 1992-10-08 | 1998-04-30 | Julius Stephen Csabai | USE OF METALLIC GLOSSY HEMATITE AS AN IMPACT MATERIAL |
US6287180B1 (en) * | 1998-02-05 | 2001-09-11 | Reuben Hertz | Handheld apparatus for propelling particulate matter against a surface of a patient's tooth, and method |
US5957760A (en) * | 1996-03-14 | 1999-09-28 | Kreativ, Inc | Supersonic converging-diverging nozzle for use on biological organisms |
US5810587A (en) * | 1996-05-13 | 1998-09-22 | Danville Engineering | Friable abrasive media |
JPH1045567A (en) * | 1996-08-05 | 1998-02-17 | Katsuyuki Itagaki | Detergent for rubbing dirt |
US5827114A (en) * | 1996-09-25 | 1998-10-27 | Church & Dwight Co., Inc. | Slurry blasting process |
US5865620A (en) * | 1997-06-12 | 1999-02-02 | Kreativ, Inc. | Abrasive dental composition and method for use |
GB9904872D0 (en) * | 1999-03-04 | 1999-04-28 | Gagemark Limited | Abrasive blasting apparatus |
US6273788B1 (en) * | 1999-07-23 | 2001-08-14 | General Electric Company | Sustained surface scrubbing |
GB9924095D0 (en) | 1999-10-13 | 1999-12-15 | Exa Sa | Abrasive blasting |
AU2055901A (en) * | 1999-12-01 | 2001-06-12 | Aesthetic Technologies, Inc. | Skin abrasion system and method |
DE10026718B4 (en) * | 2000-05-30 | 2004-07-01 | Ferton Holding S.A. | Dental abrasive blasting device |
-
2002
- 2002-09-24 EP EP06017130A patent/EP1738872A1/en not_active Withdrawn
- 2002-09-24 AT AT02785131T patent/ATE322958T1/en not_active IP Right Cessation
- 2002-09-24 WO PCT/EP2002/010692 patent/WO2003061908A1/en not_active Application Discontinuation
- 2002-09-24 EP EP02785131A patent/EP1467841B1/en not_active Revoked
- 2002-09-24 DE DE60210674T patent/DE60210674T2/en not_active Expired - Fee Related
- 2002-09-24 CA CA002473732A patent/CA2473732A1/en not_active Abandoned
- 2002-09-24 ES ES02785131T patent/ES2262869T3/en not_active Expired - Lifetime
- 2002-09-24 EP EP06003360A patent/EP1666203A1/en active Pending
- 2002-09-24 US US10/502,241 patent/US7351059B2/en not_active Expired - Fee Related
-
2004
- 2004-07-29 NO NO20043220A patent/NO20043220L/en unknown
Also Published As
Publication number | Publication date |
---|---|
US7351059B2 (en) | 2008-04-01 |
ATE322958T1 (en) | 2006-04-15 |
ES2262869T3 (en) | 2006-12-01 |
EP1666203A1 (en) | 2006-06-07 |
CA2473732A1 (en) | 2003-07-31 |
US20050123572A1 (en) | 2005-06-09 |
DE60210674D1 (en) | 2006-05-24 |
EP1738872A1 (en) | 2007-01-03 |
DE60210674T2 (en) | 2007-04-12 |
WO2003061908A1 (en) | 2003-07-31 |
EP1467841A1 (en) | 2004-10-20 |
NO20043220L (en) | 2004-07-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5512071A (en) | Water soluble blast media containing surfactant | |
US5509971A (en) | Process for removing coatings from hard surfaces | |
US20070281033A1 (en) | Skin exfoliation | |
US5384990A (en) | Water blasting process | |
EP1467841B1 (en) | A process for treating a surface | |
US5338323A (en) | Blast media containing MGO | |
CA2722676C (en) | Alkaline earth carbonate containing mineral for surface cleaning | |
WO1994007658A1 (en) | Blasting agent and a process for removing coatings | |
WO2004084850A1 (en) | A dental treatment composition | |
JPH0235977A (en) | Removal of contaminant from coated surface and remover used therefor | |
CN112822958B (en) | Cosmetic treatment method | |
EP1724239A1 (en) | A treatment composition | |
US6007639A (en) | Blasting process for removing contaminants from substrates and potassium magnesium sulfate-containing blast media |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20040727 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: EXA SA |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROCHAT, PIERRE |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: ROCHAT, PIERRE |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060412 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060412 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060412 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060412 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 60210674 Country of ref document: DE Date of ref document: 20060524 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060712 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060712 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IE Payment date: 20060815 Year of fee payment: 5 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: SUSI PRYDE-HAENI BSC |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060912 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20060927 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060930 |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20061113 Year of fee payment: 5 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2262869 Country of ref document: ES Kind code of ref document: T3 |
|
ET | Fr: translation filed | ||
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
26 | Opposition filed |
Opponent name: OMYA DEVELOPMENT AG Effective date: 20070112 |
|
PLAF | Information modified related to communication of a notice of opposition and request to file observations + time limit |
Free format text: ORIGINAL CODE: EPIDOSCOBS2 |
|
PLAF | Information modified related to communication of a notice of opposition and request to file observations + time limit |
Free format text: ORIGINAL CODE: EPIDOSCOBS2 |
|
PLBB | Reply of patent proprietor to notice(s) of opposition received |
Free format text: ORIGINAL CODE: EPIDOSNOBS3 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20070919 Year of fee payment: 6 |
|
BERE | Be: lapsed |
Owner name: S.A. *EXA Effective date: 20070930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060713 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070924 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060412 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060712 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20060924 Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060412 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070924 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20080808 Year of fee payment: 7 Ref country code: ES Payment date: 20080811 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20060412 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20080822 Year of fee payment: 7 Ref country code: IT Payment date: 20080911 Year of fee payment: 7 |
|
RDAF | Communication despatched that patent is revoked |
Free format text: ORIGINAL CODE: EPIDOSNREV1 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20080804 Year of fee payment: 7 |
|
APBM | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOSNREFNO |
|
APBP | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2O |
|
APAH | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNO |
|
APBQ | Date of receipt of statement of grounds of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA3O |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20080924 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080924 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20100531 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100401 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090930 |
|
APBU | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9O |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090924 |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
27W | Patent revoked |
Effective date: 20110314 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090925 |